On 11/6/2020 2:17 PM, mike tancsa wrote: > On 5/31/2020 5:39 PM, Lev Serebryakov wrote: >> Hello Ian, >> >> Thursday, May 28, 2020, 2:45:48 AM, you wrote: >> >>> I noticed that my VLAN interfaces stopped working after a recent build. >>> tcpdump showed traffic leaving leaving and entering the interface but no >>> host on the network actually received any packets from this host. A >>> binary search led me to r360902 and indeed the following change fixed >>> the issue for me: >> Problem is, this change will return terrible situation when adding new VLAN >> will flap connection status. >> >> It all worked before iflib: hardware VLAN filtering worked, and >> adding/removing new VLAN didn't cause link to flap. >> >> Now, with iflib, looks like we can not have all good things at once :( Looks like this is captured in https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=240818 > Hi All, > > Just came across this thread as I am running into this behaviour on > RELENG_12. Adding a new vlan causes all vlans on the parent interface > to flap. Not the greatest thing as it bounces a LOT of traffic > potentially, flaps routing etc. Is there a way around this ? > > This is on r367411 releng12 > > igb0_at_pci0:2:0:0: class=0x020000 card=0x153315d9 chip=0x15338086 > rev=0x03 hdr=0x00 > vendor = 'Intel Corporation' > device = 'I210 Gigabit Network Connection' > class = network > subclass = ethernet > > eg. just something simple like > > ifconfig vlan16 create 10.1.2.3/29 vlandev igb1 vlan 16 > > # dmesg | tail -8 > igb1: link state changed to DOWN > vlan16: link state changed to DOWN > vlan2049: link state changed to DOWN > vlan15: link state changed to DOWN > igb1: link state changed to UP > vlan16: link state changed to UP > vlan2049: link state changed to UP > vlan15: link state changed to UP > > > ---Mike > > > > > _______________________________________________ > freebsd-current_at_freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe_at_freebsd.org" >Received on Fri Nov 06 2020 - 19:48:15 UTC
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