This has happened twice in the past two weeks. When it does, traffic stops flowing to the Internet and cannot be restored without rebooting the unit. I'm running firmware 9.004-34. Below is the error output:
------------------------------------------------------
2013:03:04-11:30:01 vpn kernel: [1044479.824052] ------------[ cut here ]------------
2013:03:04-11:30:01 vpn kernel: [1044479.824071] WARNING: at net/sched/sch_generic.c:256 dev_watchdog+0xe7/0x182()
2013:03:04-11:30:01 vpn kernel: [1044479.824079] Hardware name: UTM
2013:03:04-11:30:01 vpn kernel: [1044479.824086] NETDEV WATCHDOG: eth1 (e1000e): transmit queue 0 timed out
2013:03:04-11:30:01 vpn kernel: [1044479.824092] Modules linked in: nf_nat_ftp nf_conntrack_ftp arc4 ecb ppp_mppe ppp_async crc_ccitt ppp_generic slhc sr_mod cdrom authenc esp4 xfrm6_mode_tunnel xfrm4_mode_tunnel xt_connmark xt_nat xt_esp ip_set_hash_net deflate zlib_deflate twofish_generic twofish_x86_64_3way twofish_x86_64 twofish_common serpent_sse2_x86_64 lrw serpent_generic xts gf128mul cryptd aes_x86_64 aes_generic blowfish_generic blowfish_x86_64 blowfish_common cast5 des_generic cbc sha512_generic sha256_generic sha1_ssse3 sha1_generic hmac crypto_null xfrm_user af_key xt_helper ipt_MASQUERADE xt_policy xt_tcpudp xt_set xt_multiport xt_addrtype nf_conntrack_h323 ip_set_hash_ip nf_nat_pptp nf_nat_proto_gre nf_nat_irc nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_irc dummy af_packet ebtable_filter ebtables ip6table_ips ip6table_mangle ip6table_nat nf_nat_ipv6 iptable_ips iptable_mangle iptable_nat nf_nat_ipv4 nf_nat xt_NFLOG xt_condition(O) xt_logmark xt_confirmed xt_owner xt_conntrack ip6t_REJECT ipt_REJECT ip_set nfnetlink_log acpi_cpufreq mperf microcode nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6table_raw nf_conntrack_ipv4 nf_defrag_ipv4 xt_state iptable_filter xt_NOTRACK iptable_raw nf_conntrack_netlink nfnetlink nf_conntrack ip6_tables ip_tables x_tables ipv6 red loop ppdev evdev sg i2c_i801 parport_pc e1000e(O) rtc_cmos parport pcspkr button uhci_hcd sd_mod ehci_hcd processor thermal_sys hwmon ata_generic pata_acpi ata_piix ahci libahci libata scsi_mod edd [last unloaded: nf_nat_h323]
2013:03:04-11:30:01 vpn kernel: [1044479.824369] Pid: 12448, comm: create_rrd_grap Tainted: G O 3.3.8-40.ga2ba19e-smp64 #1
2013:03:04-11:30:01 vpn kernel: [1044479.824376] Call Trace:
2013:03:04-11:30:01 vpn kernel: [1044479.824382] [] ? dev_watchdog+0xe7/0x182
2013:03:04-11:30:01 vpn kernel: [1044479.824406] [] ? warn_slowpath_common+0x78/0x8d
2013:03:04-11:30:01 vpn kernel: [1044479.824416] [] ? netif_tx_lock+0x7e/0x7e
2013:03:04-11:30:01 vpn kernel: [1044479.824427] [] ? warn_slowpath_fmt+0x45/0x4a
2013:03:04-11:30:01 vpn kernel: [1044479.824438] [] ? netif_tx_lock+0x43/0x7e
2013:03:04-11:30:01 vpn kernel: [1044479.824469] [] ? dev_watchdog+0xe7/0x182
2013:03:04-11:30:01 vpn kernel: [1044479.824481] [] ? run_timer_softirq+0x168/0x1fa
2013:03:04-11:30:01 vpn kernel: [1044479.824493] [] ? __do_softirq+0x86/0x125
2013:03:04-11:30:01 vpn kernel: [1044479.824505] [] ? lapic_next_event+0x18/0x1d
2013:03:04-11:30:01 vpn kernel: [1044479.824518] [] ? call_softirq+0x1c/0x30
2013:03:04-11:30:01 vpn kernel: [1044479.824530] [] ? do_softirq+0x3f/0x79
2013:03:04-11:30:01 vpn kernel: [1044479.824541] [] ? irq_exit+0x43/0xb0
2013:03:04-11:30:01 vpn kernel: [1044479.824552] [] ? smp_apic_timer_interrupt+0x85/0x93
2013:03:04-11:30:01 vpn kernel: [1044479.824565] [] ? apic_timer_interrupt+0x6e/0x80
2013:03:04-11:30:01 vpn kernel: [1044479.824572] [] ? sysenter_dispatch+0x7/0x25
2013:03:04-11:30:01 vpn kernel: [1044479.824588] ---[ end trace 42d5f681bf28da39 ]---
2013:03:04-11:30:01 vpn kernel: [1044479.824645] e1000e 0000:04:00.0: eth1: Reset adapter
This thread was automatically locked due to age.
