https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203573
Bug ID: 203573
Summary: wlan0 leaves arp entries forces reboot
Product: Base System
Version: 11.0-CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: freebsd-bugs@FreeBSD.org
Reporter: p...@freebsd.org
When wlan0 interface on recent -current is down'ed a stale arp entry is left
behind which cannot be removed by any means short of reboot.
Seen on: base r287959 and base r288823 amd64.
critter phk> ifconfig wlan0
wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
ether 60:67:20:b6:fd:38
inet 192.168.60.199 netmask 0xffffff00 broadcast 192.168.60.255
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
media: IEEE 802.11 Wireless Ethernet MCS mode 11na
status: associated
ssid freebsd channel 40 (5200 MHz 11a ht/40-) bssid 14:cc:20:85:92:4f
country US authmode WPA2/802.11i privacy ON deftxkey UNDEF
TKIP 3:128-bit txpower 14 bmiss 10 mcastrate 6 mgmtrate 6 scanvalid 60
ampdulimit 64k ampdudensity 8 -amsdutx amsdurx shortgi wme
roaming MANUAL
groups: wlan
root@critter:~ # ifconfig wlan0 down delete
root@critter:~ # ifconfig wlan0 down delete
ifconfig: ioctl (SIOCDIFADDR): Can't assign requested address
root@critter:~ # arp -a
? (192.168.60.199) at 60:67:20:b6:fd:38 on wlan0 permanent [ethernet]
root@critter:~ # netstat -rn
Routing tables
Internet:
Destination Gateway Flags Netif Expire
127.0.0.1 link#2 UH lo0
Internet6:
Destination Gateway Flags Netif
Expire
::/96 ::1 UGRS lo0
::1 link#2 UH lo0
::ffff:0.0.0.0/96 ::1 UGRS lo0
fe80::/10 ::1 UGRS lo0
fe80::%lo0/64 link#2 U lo0
fe80::1%lo0 link#2 UHS lo0
ff02::/16 ::1 UGRS lo0
root@critter:~ # netstat -in
Name Mtu Network Address Ipkts Ierrs Idrop Opkts Oerrs
Coll
em0* 1500 <Link#1> 0 0 0 0 0
0
lo0 16384 <Link#2> 496 0 0
496 0 0
lo0 - ::1/128 ::1 0 - - 0 -
-
lo0 - fe80::1%lo0/6 fe80::1%lo0 0 - - 0 -
-
lo0 - 127.0.0.0/8 127.0.0.1 496 - - 496 -
-
wlan0 1500 <Link#3> 127.0.0.1 51 0 0 41 6
0
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