'no route to host" for cloned lo1 iface 12.0-CURRENT r334376+56a973815425(master) amd64

Wed May 30 15:16:03 UTC 2018

On Wed, 30 May 2018, at 15:40, Dave Cottlehuber wrote:
> I have 10.241.0.0-15/16 bound to lo1 for jails, and I just realised it> doesn't work anymore. Boxes at $DAYJOB use the same config and
> work just> fine on 11.1R/amd64, otherwise I'd be fired.... this used to work ~ 1> month ago, both on my desktop, and my laptop, and now doesn't.

ping 10.241.0.0 or any of the 15 IPs says no route to host. trace route
does the same thing. Removing the spurious bridge has no effect either.
my boot environment from r333243 can ping though, netstat and rc.conf
are identical between runs.
Sorry I wrote this on a phone and copy paste failed. 

> Have I mis-configured something blindingly obvious here before
> I embark> on a lengthy bisect?
>
> # grep -v \# /etc/rc.conf , elided
> hostname=akai
> kld_list="${kld_list} if_iwm if_axge if_ure if_ue"
> ifconfig_ue0=DHCP
> ifconfig_ue0_ipv6="inet6 accept_rtadv"
> wlans_iwm0="wlan0"
> ifconfig_wlan0="WPA DHCP"
> ifconfig_wlan0_ipv6="inet6 accept_rtadv"
> create_args_wlan0="country AT regdomain ETSI"
> cloned_interfaces="${cloned_interfaces} lo1"
> ifconfig_lo1_aliases="inet 10.241.0.0-15/16"
> ip6addrctl_policy="ipv4_prefer"
>
> # netstat -4rn
> Internet:
> Destination        Gateway            Flags     Netif Expire
> default            172.16.2.1         UGS         ue0
> 10.241.0.0         link#4             UH          lo1
> 10.241.0.1         link#4             UH          lo1
> 10.241.0.2         link#4             UH          lo1
> 10.241.0.3         link#4             UH          lo1
> 10.241.0.4         link#4             UH          lo1
> 10.241.0.5         link#4             UH          lo1
> 10.241.0.6         link#4             UH          lo1
> 10.241.0.7         link#4             UH          lo1
> 10.241.0.8         link#4             UH          lo1
> 10.241.0.9         link#4             UH          lo1
> 10.241.0.10        link#4             UH          lo1
> 10.241.0.11        link#4             UH          lo1
> 10.241.0.12        link#4             UH          lo1
> 10.241.0.13        link#4             UH          lo1
> 10.241.0.14        link#4             UH          lo1
> 10.241.0.15        link#4             UH          lo1
> 127.0.0.1          link#1             UH          lo0
> 172.16.2.0/24      link#2             U           ue0
> 172.16.2.92        link#3             UHS         lo0
> 172.16.2.93        link#2             UHS         lo0
>
> # ifconfig
> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
>  options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
>  inet6 ::1 prefixlen 128
>  inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
>  inet 127.0.0.1 netmask 0xff000000
>  nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
>  groups: lo
> ue0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
> 1500
>  options=8000b<RXCSUM,TXCSUM,VLAN_MTU,LINKSTATE>
>  ether 74:da:38:d8:fe:a7
>  inet6 fe80::76da:38ff:fed8:fea7%ue0 prefixlen 64 scopeid 0x2
>  inet 172.16.2.93 netmask 0xffffff00 broadcast 172.16.2.255
>  nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
>  media: Ethernet autoselect (1000baseT <full-duplex>)
>  status: active
> wlan0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST>
> metric> 0 mtu 1500
>  ether 00:28:f8:d0:91:52
>  inet6 fe80::228:f8ff:fed0:9152%wlan0 prefixlen 64 scopeid 0x3
>  inet 172.16.2.92 netmask 0xffffff00 broadcast 172.16.2.255
>  nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
>  media: IEEE 802.11 Wireless Ethernet OFDM/54Mbps mode 11g
>  status: associated
>  ssid skunkwerks channel 6 (2437 MHz 11g) bssid 80:2a:a8:5a:bd:3f
>  regdomain ETSI country AT authmode WPA2/802.11i privacy ON
>  deftxkey UNDEF AES-CCM 2:128-bit txpower 30 bmiss 10 scanvalid 60
>  protmode CTS wme roaming MANUAL
>  groups: wlan
> lo1: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
>  options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
>  inet 10.241.0.0 netmask 0xffff0000
>  inet 10.241.0.1 netmask 0xffffffff
>  inet 10.241.0.2 netmask 0xffffffff
>  inet 10.241.0.3 netmask 0xffffffff
>  inet 10.241.0.4 netmask 0xffffffff
>  inet 10.241.0.5 netmask 0xffffffff
>  inet 10.241.0.6 netmask 0xffffffff
>  inet 10.241.0.7 netmask 0xffffffff
>  inet 10.241.0.8 netmask 0xffffffff
>  inet 10.241.0.9 netmask 0xffffffff
>  inet 10.241.0.10 netmask 0xffffffff
>  inet 10.241.0.11 netmask 0xffffffff
>  inet 10.241.0.12 netmask 0xffffffff
>  inet 10.241.0.13 netmask 0xffffffff
>  inet 10.241.0.14 netmask 0xffffffff
>  inet 10.241.0.15 netmask 0xffffffff
>  nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>  groups: lo
> bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST>
> metric 0 mtu> 1500
>  description: vm-public
>  ether 02:63:d4:40:fe:00
>  nd6 options=1<PERFORMNUD>
>  groups: bridge
>  id 00:00:00:00:00:00 priority 0 hellotime 2 fwddelay 15
>  maxage 20 holdcnt 6 proto rstp maxaddr 20