Date: Wed, 3 Aug 2016 10:20:19 +0200 From: Roger Pau =?iso-8859-1?Q?Monn=E9?= <roger.pau@citrix.com> To: Julian Elischer <julian@freebsd.org> Cc: freebsd-current <freebsd-current@freebsd.org>, <freebsd-xen@freebsd.org> Subject: Re: Xen networking problems in -current with xn driver? Message-ID: <20160803082018.jrqienhyewjjjmmb@mac> In-Reply-To: <0b90d4f0-fc02-7a07-6ce1-135a61cbc352@freebsd.org> References: <0b90d4f0-fc02-7a07-6ce1-135a61cbc352@freebsd.org>
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On Wed, Aug 03, 2016 at 02:12:33AM +0800, Julian Elischer wrote: > I upgraded my VPS machine to today's current, and on reboot I couldn't get > into it by network. > > A quick switch to the VNC console showed that it was up but that it couldn't > get out. > > > The xn interfaces said they were UP but attempts to get out were met with > "network is down". > > if I did 'tcpdump -n -i xn0' (and xn1) hten all was fine again. > > tcpdump saw packets, and in fact ipfw saw some packets coming in even before > that but it was not possible to send. > > > Has anyone seen similar? Hello, I've tested current less than one week ago and didn't find any issues, I'm currently updating to see if it's something that has been introduced in the last few days. There have also been reports of it working fine on the freebsd-xen mailing list, but I guess there's something different with your setup: https://lists.freebsd.org/pipermail/freebsd-xen/2016-July/002779.html > some relevant parts of the dmesg output.: > > > T(vga): text 80x25 > XEN: Hypervisor version 3.4 detected. > CPU: Intel(R) Xeon(R) CPU E5620 @ 2.40GHz (2400.05-MHz 686-class > CPU) > Origin="GenuineIntel" Id=0x206c2 Family=0x6 Model=0x2c Stepping=2 > Features=0x1781fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,MMX,FXSR,SSE,SSE2,HTT> > Features2=0x80982201<SSE3,SSSE3,CX16,SSE4.1,SSE4.2,POPCNT,HV> > AMD Features=0x20100000<NX,LM> > AMD Features2=0x1<LAHF> > Hypervisor: Origin = "XenVMMXenVMM" > real memory = 536870912 (512 MB) > avail memory = 503783424 (480 MB) > Event timer "LAPIC" quality 400 > ACPI APIC Table: <Xen HVM> > WARNING: L1 data cache covers less APIC IDs than a core > 0 < 1 > WARNING: L2 data cache covers less APIC IDs than a core > 0 < 1 > WARNING: L3 data cache covers less APIC IDs than a core > 0 < 1 > > ipfw2 (+ipv6) initialized, divert loadable, nat enabled, default to deny, You seem to be using ipfw, I guess you have firewall_enable="YES" on you rc.conf, are you also using IPv6? Anything else net related on your rc.conf? Roger.
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