https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215737
Willem Jan Withagen <w...@digiware.nl> changed:
What |Removed |Added
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CC| |w...@digiware.nl
--- Comment #22 from Willem Jan Withagen <w...@digiware.nl> ---
What did not work for me last time I tried is:
Have mtu 9000 on the physical interface, and add bridge to it.
The bridge will automagically get an MTU of 9000
Then try to add a plain TAP to it, you'll get "invallid argument".
Setting the tap MTU to 9000 fixes that problem.
I know this is not a typical bhyve problem, but will fail when using vmrun.sh
--WjW
root@zfstest:/tmp # ifconfig re0
re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,LINKSTATE>
ether 9c:5c:8e:84:d6:21
inet 192.168.10.78 netmask 0xfffffc00 broadcast 192.168.11.255
inet 192.168.11.78 netmask 0xffffff00 broadcast 192.168.11.255
inet6 fe80::9e5c:8eff:fe84:d621%re0 prefixlen 64 scopeid 0x1
inet6 2001:4cb8:3:1::78 prefixlen 64
inet6 2001:4cb8:3:1::11:78 prefixlen 64
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
root@zfstest:/tmp # ifconfig re0 mtu 9000
root@zfstest:/tmp # ifconfig bridge0 create
root@zfstest:/tmp # ifconfig bridge0 addm re0 up
root@zfstest:/tmp # ifconfig bridge0
bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9000
ether 02:fe:a0:7f:12:00
id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
member: re0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 1 priority 128 path cost 20000
groups: bridge
nd6 options=9<PERFORMNUD,IFDISABLED>
root@zfstest:/tmp # ifconfig tap1213 create
root@zfstest:/tmp # ifconfig bridge0 addm tap1213
ifconfig: BRDGADD tap1213: Invalid argument
root@zfstest:/tmp # ifconfig bridge0 addm t
root@zfstest:/tmp # ifconfig tap1213 mtu 9000
root@zfstest:/tmp # ifconfig bridge0 addm tap1213
root@zfstest:/tmp #
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