[Bug 242784] arp: segfault on service netif restart

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242784

--- Comment #4 from corvid at openmailbox.org ---
rc.conf
wlans_iwn0="wlan0"
ifconfig_wlan0="NOAUTO WPA DHCP"
ifconfig_em0="NOAUTO DHCP"
dhclient_program="/usr/local/sbin/dhclient"

for wpa_supplicant, I can't guess what network I would have been on.

reproducibility: I hadn’t had dns strangeness again, so I hadn’t tried again,
figuring the conditions were different, but let’s just go ahead and see what
happens right now.

Well. Silly me. It _is_ reproducible. Here’s what happened to show up in the
system log:
Dec 29 23:40:53 <kern.info> kernel: in6_purgeaddr: err=65, destination address
delete failed
Dec 29 23:40:53 <kern.info> kernel: lo0: link state changed to DOWN
Dec 29 23:40:53 <daemon.info> dhclient[90852]: DHCPRELEASE of [...] on wlan0 to
[...] port 67
Dec 29 23:40:53 <kern.info> kernel: wlan0: deletion failed: 3
Dec 29 23:40:53 <kern.info> kernel: wlan0: link state changed to DOWN
Dec 29 23:40:53 <daemon.notice> wpa_supplicant[69228]: wlan0:
CTRL-EVENT-DISCONNECTED bssid=[...] reason=3 locally_generated=1
Dec 29 23:40:53 <daemon.notice> wpa_supplicant[69228]: wlan0:
CTRL-EVENT-TERMINATING 
Dec 29 23:40:53 <kern.info> kernel: wlan0: bpf attached
Dec 29 23:40:53 <kern.info> syslogd: last message repeated 1 times
Dec 29 23:40:53 <kern.info> kernel: wlan0: Ethernet address: [...]
Dec 29 23:40:53 <kern.info> kernel: lo0: link state changed to UP
Dec 29 23:40:54 <daemon.err> dhclient[90852]: receive_packet failed on wlan0:
No error: 0
Dec 29 23:40:54 <kern.info> kernel: pid 43492 (arp), jid 0, uid 0: exited on
signal 11 (core dumped)

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