https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291901
Bug ID: 291901
Summary: routed(8) looks to be confused when an interface is
renamed
Product: Base System
Version: 14.3-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: bin
Assignee: [email protected]
Reporter: [email protected]
On 14.2-RELEASE (also probably present in subsequent revisions), routed(8)
running in quiet mode (-q) issues an unjustified error message when an
interface is renamed:
Dec 23 18:15:49 hox routed[1127]: wan0 (192.168.4.253/24) is duplicated by ue1
(192.168.4.253/24)
wan0 and ue1 are the same interface: this message is issued after the USB
interface is plugged-in and the following actions are performed by a script run
by devd:
Dec 23 18:10:48 hox netifsetup[23995]: warning: executing 'ifconfig ue1 inet
alias 192.168.4.253/24'
Dec 23 18:10:49 hox netifsetup[24085]: warning: executing 'ifconfig bridge0
addm ue1 -stp ue1'
Dec 23 18:10:49 hox netifsetup[24098]: warning: executing 'ifconfig ue1 name
wan0'
I suspect that routed receive, in sequence, RTM_ADD(wan0) and RTM_DELETE(ue1)
messages through its routing socket. It probably emit the error immediately
after RTM_ADD. It should instead wait a (very) little while until it receives
RTM_DELETE, at which point no message is required. If and only if after the
(very) little while duration RTM_DELETE still wasn't received, then issue the
error message which would then signal a genuine error.
Alternatively, the kernel could inverse the messages sequence order (delete
before add) which would make more sense IMHO.
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