K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2019-09-17T18:51:10.223214Z
K 7
svn:log
V 659
ifconfig: add report of the string from SIOCGIFDOWNREASON.

Sample output:
# ifconfig mce0
mce0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=3ed07bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWFILTER,VLAN_HWTSO,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6,TXRTLMT,HWRXTSTMP>
        ether e4:1d:2d:e7:10:0a
        media: Ethernet autoselect <full-duplex,rxpause,txpause>
        status: no carrier (Negotiation failure)
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>

Reviewed by:	hselasky, rrs
Sponsored by:	Mellanox Technologies
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D21527

END