Bug 263667 - ifconfig: group flags -g and -G not consistent with expectation or man page
Summary: ifconfig: group flags -g and -G not consistent with expectation or man page
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: bin (show other bugs)
Version: Unspecified
Hardware: Any Any
: --- Affects Some People
Assignee: freebsd-bugs (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-04-30 03:33 UTC by Jeff Kletsky
Modified: 2022-04-30 14:23 UTC (History)
1 user (show)

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Description Jeff Kletsky 2022-04-30 03:33:19 UTC 
FreeBSD js1 13.1-RC4 FreeBSD 13.1-RC4 releng/13.1-n250133-283d1b98251 GENERIC amd64


The group-selection flags' behavior is not sufficient to get a simple (actionable) 
list of interfaces that are members of one group and not another. 
The man page, as I understand it, suggests that this should be possible.


[jeff@js1 ~/devel/jail-networking]$ /sbin/ifconfig -g @jname-si-real -G bridge
vif0
vif0/jname-si-
bridge6

Expected vif0 and vif0/jname-si-


[jeff@js1 ~/devel/jail-networking]$ /sbin/ifconfig -a -g @jname-si-real -G bridge
vif0: flags=8863<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=8<VLAN_MTU>
	ether 02:c1:6f:13:e8:0a
	groups: epair @jname-si-real
	media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
	status: active
	nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
vif0/jname-si-: flags=8963<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=8<VLAN_MTU>
	ether 02:c1:6f:13:e8:0b
	groups: epair @jname-si-real
	media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
	status: active
	nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

Works, but needs to be processed as text to become an actionable list
sus as `for lvar in $(/sbin/ifconfig some args) ; do `


For reference

[jeff@js1 ~/devel/jail-networking]$ ifconfig bridge6
bridge6: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	ether 58:9c:fc:10:28:6c
	id 00:0d:b9:48:62:b5 priority 32768 hellotime 2 fwddelay 15
	maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
	root id 00:0d:b9:48:62:b5 priority 32768 ifcost 0 port 0
	member: vif0/jname-si- flags=1e7<LEARNING,DISCOVER,STP,EDGE,AUTOEDGE,PTP,AUTOPTP>
	        ifmaxaddr 0 port 29 priority 128 path cost 2000 proto rstp
	        role designated state forwarding
	member: igb1.6 flags=1e7<LEARNING,DISCOVER,STP,EDGE,AUTOEDGE,PTP,AUTOPTP>
	        ifmaxaddr 0 port 19 priority 128 path cost 20000 proto rstp
	        role designated state forwarding
	groups: bridge @jname-si-real
	nd6 options=9<PERFORMNUD,IFDISABLED>