Есть 2 интерфейса
eth0 через мост (для виртуалки сделано) смотрит в локальную сеть и eth1 смотрящий наружу, самому ошибку не удалось зафиксировать, т.к. сервер ребутнули, в логах вижу вот это
Dec 11 09:11:22 kernel: [254932.511727] alx 0000:04:00.0: eth0: error when reset mac
Dec 11 09:12:18 kernel: [254987.675465] ------------[ cut here ]------------
Dec 11 09:12:18 kernel: [254987.675476] WARNING: at /build/linux-Af5mgi/linux-3.2.63/net/sched/sch_generic.c:256 dev_watchdog+0xf2/0x151()
Dec 11 09:12:18 kernel: [254987.675479] Hardware name: To be filled by O.E.M.
Dec 11 09:12:18 kernel: [254987.675481] NETDEV WATCHDOG: eth0 (alx): transmit queue 0 timed out
Dec 11 09:12:18 kernel: [254987.675483] Modules linked in: fuse btrfs libcrc32c zlib_deflate ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs xfs reiserfs ext3 jbd ext2 efivars tun ip6table_filter ip6_tables ebtable_nat ebtables bridge stp ipt_REDIRECT iptable_nat xt_comment xt_tcpudp xt_state xt_multiport iptable_filter ip_tables x_tables nf_nat_pptp nf_nat_proto_gre nf_conntrack_pptp nf_conntrack_proto_gre nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack loop kvm_intel kvm snd_hda_codec_hdmi snd_hda_codec_via i915 coretemp snd_hda_intel snd_hda_codec crc32c_intel ghash_clmulni_intel snd_hwdep aesni_intel snd_pcm drm_kms_helper aes_x86_64 snd_page_alloc snd_timer drm aes_generic cryptd snd i2c_algo_bit i2c_i801 soundcore psmouse iTCO_wdt acpi_cpufreq iTCO_vendor_support serio_raw pcspkr i2c_core mperf evdev video processor button ext4 crc16 jbd2 mbcache dm_mod raid1 md_mod sg sr_mod sd_mod cdrom crc_t10dif ata_generic r8169 mii fan thermal thermal_sys xhci_hcd ata_piix ehci_hcd libata scsi_mod usbc
Dec 11 09:12:18 kernel: ore alx(C) usb_common [last unloaded: scsi_wait_scan]
Dec 11 09:12:18 kernel: [254987.675566] Pid: 0, comm: swapper/0 Tainted: G C 3.2.0-4-amd64 #1 Debian 3.2.63-2+deb7u1
Dec 11 09:12:18 kernel: [254987.675569] Call Trace:
Dec 11 09:12:18 kernel: [254987.675571] <IRQ> [<ffffffff81046d61>] ? warn_slowpath_common+0x78/0x8c
Dec 11 09:12:18 kernel: [254987.675581] [<ffffffff81046e0d>] ? warn_slowpath_fmt+0x45/0x4a
Dec 11 09:12:18 kernel: [254987.675586] [<ffffffff812a85a5>] ? netif_tx_lock+0x40/0x75
Dec 11 09:12:18 kernel: [254987.675594] [<ffffffff812a8715>] ? dev_watchdog+0xf2/0x151
Dec 11 09:12:18 kernel: [254987.675599] [<ffffffff81052580>] ? run_timer_softirq+0x19a/0x261
Dec 11 09:12:18 kernel: [254987.675603] [<ffffffff812a8623>] ? netif_tx_unlock+0x49/0x49
Dec 11 09:12:18 kernel: [254987.675607] [<ffffffff81066399>] ? timekeeping_get_ns+0xd/0x2a
Dec 11 09:12:18 kernel: [254987.675611] [<ffffffff8104c3f6>] ? __do_softirq+0xb9/0x177
Dec 11 09:12:18 kernel: [254987.675616] [<ffffffff81357cec>] ? call_softirq+0x1c/0x30
Dec 11 09:12:18 kernel: [254987.675622] [<ffffffff8100fa21>] ? do_softirq+0x3c/0x7b
Dec 11 09:12:18 kernel: [254987.675625] [<ffffffff8104c65e>] ? irq_exit+0x3c/0x99
Dec 11 09:12:18 kernel: [254987.675630] [<ffffffff810245d4>] ? smp_apic_timer_interrupt+0x74/0x82
Dec 11 09:12:18 kernel: [254987.675634] [<ffffffff8135655e>] ? apic_timer_interrupt+0x6e/0x80
Dec 11 09:12:18 kernel: [254987.675636] <EOI> [<ffffffff810668fd>] ? ktime_get+0x50/0x86
Dec 11 09:12:18 kernel: [254987.675644] [<ffffffff811ef6e4>] ? intel_idle+0xed/0x119
Dec 11 09:12:18 kernel: [254987.675647] [<ffffffff811ef6c0>] ? intel_idle+0xc9/0x119
Dec 11 09:12:18 kernel: [254987.675652] [<ffffffff8127141d>] ? cpuidle_idle_call+0xec/0x179
Dec 11 09:12:18 kernel: [254987.675656] [<ffffffff8100d242>] ? cpu_idle+0xa5/0xf2
Dec 11 09:12:18 kernel: [254987.675661] [<ffffffff816abb3b>] ? start_kernel+0x3bd/0x3c8
Dec 11 09:12:18 kernel: [254987.675665] [<ffffffff816ab140>] ? early_idt_handlers+0x140/0x140
Dec 11 09:12:18 kernel: [254987.675670] [<ffffffff816ab3c4>] ? x86_64_start_kernel+0x104/0x111
Dec 11 09:12:18 kernel: [254987.675672] ---[ end trace 8939298b8cc871d1 ]---
Dec 11 09:12:18 kernel: [254987.676342] alx 0000:04:00.0: eth0: error when reset mac
Dec 11 09:23:58 kernel: [255685.682157] alx 0000:04:00.0: eth0: error when reset mac
Dec 11 10:10:49 kernel: [258489.377521] alx 0000:04:00.0: eth0: error when stop mac
Dec 11 10:10:49 kernel: [258489.377575] alx 0000:04:00.0: eth0: speed = 0x2f, autoneg = 1
