I build a linux system with kernel 2.6.119,two eth NIC is used to build a bridge. One NIC(we marked it eth2) is connected with a local network A,and the other NIC(eth3) is connected with Internet. In some case the local network can not vist the Internet,and some logs in the kernel message descripts as:
Dec 12 16:57:28 customize kernel: printk: 1459 messages suppressed.
Dec 12 16:57:28 customize kernel: kjournald: page allocation failure. order:0, mode:0x20
Dec 12 16:57:28 customize kernel: [<c012ff3f>]
Dec 12 16:57:28 customize kernel: [<c0132417>]
Dec 12 16:57:28 customize kernel: [<c0132ed6>]
Dec 12 16:57:28 customize kernel: [<c0133112>]
Dec 12 16:57:28 customize kernel: [<c01332ef>]
Dec 12 16:57:28 customize kernel: [<c0359bd2>]
Dec 12 16:57:28 customize kernel: [<c0359fe0>]
Dec 12 16:57:28 customize kernel: [<c036570b>]
Dec 12 16:57:28 customize kernel: [<c0391d7f>]
Dec 12 16:57:28 customize kernel: [<c02fab90>]
Dec 12 16:57:28 customize kernel: [<c0391d7f>]
Dec 12 16:57:28 customize kernel: [<c0391d7f>]
Dec 12 16:57:28 customize kernel: [<c02fae76>]
Dec 12 16:57:28 customize kernel: [<c0391d7f>]
Dec 12 16:57:28 customize kernel: [<c03927cd>]
Dec 12 16:57:28 customize kernel: [<c0391d7f>]
Dec 12 16:57:28 customize kernel: [<c038e390>]
Dec 12 16:57:28 customize kernel: [<c02fab90>]
Dec 12 16:57:28 customize kernel: [<c038e390>]
Dec 12 16:57:28 customize kernel: [<c038e390>]
Dec 12 16:57:28 customize kernel: [<c02fae76>]
Dec 12 16:57:28 customize kernel: [<c038e390>]
Dec 12 16:57:28 customize kernel: [<c038e5ec>]
Dec 12 16:57:28 customize kernel: [<c038e390>]
Dec 12 16:57:28 customize kernel: [<c02f19e3>]
Dec 12 16:57:28 customize kernel: [<c027976a>]
Dec 12 16:57:28 customize kernel: [<c017b109>]
Dec 12 16:57:28 customize kernel: [<c02f1c4a>]
Dec 12 16:57:28 customize kernel: [<c011af62>]
Dec 12 16:57:28 customize kernel: [<c011afd7>]
Dec 12 16:57:28 customize kernel: [<c0104082>]
Dec 12 16:57:28 customize kernel: [<c01029a2>]
Dec 12 16:57:28 customize kernel: [<c012b5db>]
Dec 12 16:57:28 customize kernel: [<c0146ecb>]
Dec 12 16:57:28 customize kernel: [<c0147bb3>]
Dec 12 16:57:28 customize kernel: [<c0147bef>]
Dec 12 16:57:28 customize kernel: [<c018fde1>]
Dec 12 16:57:28 customize kernel: [<c018d0cd>]
Dec 12 16:57:28 customize kernel: [<c012f6af>]
Dec 12 16:57:28 customize kernel: [<c01279f2>]
Dec 12 16:57:28 customize kernel: [<c03a4266>]
Dec 12 16:57:28 customize kernel: [<c018f475>]
Dec 12 16:57:28 customize kernel: [<c01279f2>]
Dec 12 16:57:28 customize kernel: [<c01279f2>]
Dec 12 16:57:28 customize kernel: [<c0101f42>]
Dec 12 16:57:28 customize kernel: [<c018f3b0>]
Dec 12 16:57:28 customize kernel: [<c018f3ba>]
Dec 12 16:57:28 customize kernel: [<c0100621>]
Dec 12 16:57:28 customize kernel: e100: eth2: e100_watchdog: link down
Dec 12 16:57:28 customize kernel: bridge: port 1(eth2) entering disabled state
Dec 12 16:57:28 customize kernel: e100: eth2: e100_watchdog: link up, 100Mbps, full-duplex
Dec 12 16:57:28 customize kernel: bridge: port 1(eth2) entering learning state
Dec 12 16:57:43 customize kernel: bridge: topology change detected, propagating
Dec 12 16:58:19 customize kernel: bridge: port 1(eth2) entering forwarding state
Dec 12 16:58:19 customize kernel: printk: 4357 messages suppressed.
Dec 12 16:58:19 customize kernel: 10.1.0.250 sent an invalid ICMP type 3, code 10 error to a broadcast: 0.0.0.0 on lo
Dec 12 16:58:19 customize last message repeated 6 times
Dec 12 16:58:19 customize kernel: e100: eth2: e100_watchdog: link down
Dec 12 16:58:19 customize kernel: bridge: port 1(eth2) entering disabled state
Dec 12 16:58:41 customize kernel: e100: eth2: e100_watchdog: link up, 100Mbps, full-duplex
Dec 12 16:58:41 customize kernel: bridge: port 1(eth2) entering learning state
Dec 12 16:58:56 customize kernel: bridge: topology change detected, propagating
Dec 12 16:58:56 customize kernel: bridge: port 1(eth2) entering forwarding state
Dec 12 17:00:57 customize kernel: e100: eth2: e100_watchdog: link down
Dec 12 17:00:57 customize kernel: bridge: port 1(eth2) entering disabled state
Dec 12 17:01:38 customize kernel: 10.1.0.250 sent an invalid ICMP type 3, code 10 error to a broadcast: 0.0.0.0 on lo
Dec 12 17:02:21 customize last message repeated 2 times
Dec 12 17:02:28 customize kernel: 10.1.0.250 sent an invalid ICMP type 3, code 10 error to a broadcast: 0.0.0.0 on lo
Dec 12 17:02:35 customize kernel: e100: eth2: e100_watchdog: link up, 100Mbps, full-duplex
Dec 12 17:02:35 customize kernel: bridge: port 1(eth2) entering learning state
Dec 12 17:02:50 customize kernel: bridge: topology change detected, propagating
Dec 12 17:02:50 customize kernel: bridge: port 1(eth2) entering forwarding state

How can i do?