[FS#3344] After a while, the network port falls off (eth0: transmit timed out, mt7620, 19.07.04)

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FS#3344 - After a while, the network port falls off (eth0: transmit timed out, mt7620, 19.07.04)
User who did this - Rikki Vizcarra (AcidSlide)

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I just noticed this after reviewing the logread, it seems the issue is related to dnsmasq and dhcp

Most of the __mtk_soc_eth error__ happens just a few seconds after a __dnsmasq read__


Mon Sep 21 11:34:21 2020 daemon.info dnsmasq[15036]: read /etc/hosts - 4 addresses
Mon Sep 21 11:34:21 2020 daemon.info dnsmasq[15036]: read /tmp/hosts/odhcpd - 4 addresses
Mon Sep 21 11:34:21 2020 daemon.info dnsmasq[15036]: read /tmp/hosts/dhcp.cfg01411c - 7 addresses
Mon Sep 21 11:34:21 2020 daemon.info dnsmasq-dhcp[15036]: read /etc/ethers - 0 addresses
Mon Sep 21 11:34:22 2020 daemon.info dnsmasq[15036]: read /etc/hosts - 4 addresses
Mon Sep 21 11:34:22 2020 daemon.info dnsmasq[15036]: read /tmp/hosts/odhcpd - 6 addresses
Mon Sep 21 11:34:22 2020 daemon.info dnsmasq[15036]: read /tmp/hosts/dhcp.cfg01411c - 7 addresses
Mon Sep 21 11:34:22 2020 daemon.info dnsmasq-dhcp[15036]: read /etc/ethers - 0 addresses
Mon Sep 21 11:34:29 2020 kern.err kernel: [68477.692110] mtk_soc_eth 10100000.ethernet eth0: transmit timed out
Mon Sep 21 11:34:29 2020 kern.info kernel: [68477.698400] mtk_soc_eth 10100000.ethernet eth0: dma_cfg:00000055
Mon Sep 21 11:34:29 2020 kern.info kernel: [68477.704529] mtk_soc_eth 10100000.ethernet eth0: tx_ring=0, base=03390000, max=1024, ctx=187, dtx=187, fdx=16, next=187
Mon Sep 21 11:34:29 2020 kern.info kernel: [68477.715396] mtk_soc_eth 10100000.ethernet eth0: rx_ring=0, base=02cac000, max=1024, calc=110, drx=111
Mon Sep 21 11:35:39 2020 kern.err kernel: [68547.691664] mtk_soc_eth 10100000.ethernet eth0: transmit timed out
Mon Sep 21 11:35:39 2020 kern.info kernel: [68547.697961] mtk_soc_eth 10100000.ethernet eth0: dma_cfg:00000055
Mon Sep 21 11:35:39 2020 kern.info kernel: [68547.704094] mtk_soc_eth 10100000.ethernet eth0: tx_ring=0, base=03390000, max=1024, ctx=192, dtx=192, fdx=155, next=192
Mon Sep 21 11:35:39 2020 kern.info kernel: [68547.715050] mtk_soc_eth 10100000.ethernet eth0: rx_ring=0, base=02ca4000, max=1024, calc=424, drx=426
Mon Sep 21 11:35:49 2020 kern.err kernel: [68557.691603] mtk_soc_eth 10100000.ethernet eth0: transmit timed out
Mon Sep 21 11:35:49 2020 kern.info kernel: [68557.697898] mtk_soc_eth 10100000.ethernet eth0: dma_cfg:00000055
Mon Sep 21 11:35:49 2020 kern.info kernel: [68557.704025] mtk_soc_eth 10100000.ethernet eth0: tx_ring=0, base=03390000, max=1024, ctx=784, dtx=784, fdx=256, next=784
Mon Sep 21 11:35:49 2020 kern.info kernel: [68557.714977] mtk_soc_eth 10100000.ethernet eth0: rx_ring=0, base=02cac000, max=1024, calc=349, drx=350

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More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3344#comment8821

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