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netlink: specs: Add a spec for FIB rule management
Add a YNL spec for FIB rules: ./tools/net/ynl/cli.py \ --spec Documentation/netlink/specs/rt_rule.yaml \ --dump getrule --json '{"family": 2}' [{'action': 'to-tbl', 'dst-len': 0, 'family': 2, 'flags': 0, 'protocol': 2, 'src-len': 0, 'suppress-prefixlen': '0xffffffff', 'table': 255, 'tos': 0}, ... ] Acked-by: Stanislav Fomichev <[email protected]> Reviewed-by: Ido Schimmel <[email protected]> Signed-off-by: Donald Hunter <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Jakub Kicinski <[email protected]>
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‎Documentation/netlink/specs/rt_rule.yaml‎

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# SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
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name: rt-rule
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protocol: netlink-raw
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protonum: 0
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doc:
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FIB rule management over rtnetlink.
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definitions:
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-
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name: rtgenmsg
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type: struct
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members:
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-
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name: family
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type: u8
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-
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name: pad
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type: pad
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len: 3
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-
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name: fib-rule-hdr
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type: struct
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members:
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-
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name: family
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type: u8
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-
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name: dst-len
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type: u8
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-
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name: src-len
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type: u8
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-
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name: tos
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type: u8
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-
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name: table
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type: u8
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-
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name: res1
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type: pad
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len: 1
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-
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name: res2
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type: pad
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len: 1
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-
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name: action
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type: u8
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enum: fr-act
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-
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name: flags
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type: u32
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-
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name: fr-act
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type: enum
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entries:
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- unspec
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- to-tbl
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- goto
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- nop
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- res3
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- res4
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- blackhole
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- unreachable
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- prohibit
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-
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name: fib-rule-port-range
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type: struct
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members:
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-
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name: start
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type: u16
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-
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name: end
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type: u16
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-
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name: fib-rule-uid-range
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type: struct
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members:
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-
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name: start
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type: u32
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-
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name: end
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type: u32
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attribute-sets:
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-
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name: fib-rule-attrs
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attributes:
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-
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name: dst
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type: u32
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-
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name: src
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type: u32
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-
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name: iifname
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type: string
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-
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name: goto
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type: u32
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-
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name: unused2
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type: pad
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-
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name: priority
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type: u32
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-
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name: unused3
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type: pad
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-
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name: unused4
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type: pad
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-
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name: unused5
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type: pad
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-
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name: fwmark
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type: u32
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display-hint: hex
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-
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name: flow
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type: u32
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-
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name: tun-id
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type: u64
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-
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name: suppress-ifgroup
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type: u32
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-
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name: suppress-prefixlen
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type: u32
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display-hint: hex
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-
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name: table
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type: u32
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-
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name: fwmask
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type: u32
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display-hint: hex
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-
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name: oifname
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type: string
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-
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name: pad
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type: pad
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-
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name: l3mdev
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type: u8
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-
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name: uid-range
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type: binary
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struct: fib-rule-uid-range
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-
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name: protocol
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type: u8
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-
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name: ip-proto
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type: u8
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-
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name: sport-range
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type: binary
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struct: fib-rule-port-range
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-
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name: dport-range
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type: binary
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struct: fib-rule-port-range
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-
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name: dscp
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type: u8
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operations:
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enum-model: directional
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fixed-header: fib-rule-hdr
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list:
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-
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name: newrule
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doc: Add new FIB rule
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attribute-set: fib-rule-attrs
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do:
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request:
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value: 32
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attributes: &fib-rule-all
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- iifname
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- oifname
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- priority
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- fwmark
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- flow
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- tun-id
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- fwmask
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- table
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- suppress-prefixlen
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- suppress-ifgroup
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- goto
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- l3mdev
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- uid-range
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- protocol
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- ip-proto
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- sport-range
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- dport-range
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- dscp
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-
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name: newrule-ntf
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doc: Notify a rule creation
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value: 32
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notify: newrule
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-
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name: delrule
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doc: Remove an existing FIB rule
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attribute-set: fib-rule-attrs
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do:
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request:
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value: 33
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attributes: *fib-rule-all
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-
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name: delrule-ntf
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doc: Notify a rule deletion
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value: 33
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notify: delrule
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-
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name: getrule
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doc: Dump all FIB rules
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attribute-set: fib-rule-attrs
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dump:
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request:
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value: 34
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reply:
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value: 32
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attributes: *fib-rule-all
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mcast-groups:
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list:
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-
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name: rtnlgrp-ipv4-rule
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value: 8
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-
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name: rtnlgrp-ipv6-rule
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value: 19

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