I am running Debian 11, the system has some network bridge interfaces that I
would like to remove. I can remove them but they are restored on reboot.
I cannot find where the system is storing the details of these interfaces.
The bridges named beginning with 'br-' are the ones I am trying to remove
permanently.
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#ip link show type bridge
4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default qlen 1000
link/ether 52:54:00:d2:12:66 brd ff:ff:ff:ff:ff:ff
5: br-1aef6ff62773: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default
link/ether 02:42:1d:0e:6e:2b brd ff:ff:ff:ff:ff:ff
6: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default
link/ether 02:42:ac:64:2e:63 brd ff:ff:ff:ff:ff:ff
7: br-76bbcf8f8d34: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default
link/ether 02:42:8c:7d:82:ce brd ff:ff:ff:ff:ff:ff
8: br-926f179fe064: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default
link/ether 02:42:d4:4d:8e:d8 brd ff:ff:ff:ff:ff:ff
9: br-a8aeefb914d0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default
link/ether 02:42:a4:56:39:d7 brd ff:ff:ff:ff:ff:ff
10: br-bbfd634bae00: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default
link/ether 02:42:2a:be:f2:bb brd ff:ff:ff:ff:ff:ff
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#brctl show
bridge name bridge id STP enabled interfaces
br-1aef6ff62773 8000.02421d0e6e2b no
br-76bbcf8f8d34 8000.02428c7d82ce no
br-926f179fe064 8000.0242d44d8ed8 no
br-a8aeefb914d0 8000.0242a45639d7 no
br-bbfd634bae00 8000.02422abef2bb no
docker0 8000.0242ac642e63 no
virbr0 8000.525400d21266 yes
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ip link set br-a8aeefb914d0 down
ip link set br-bbfd634bae00 down
ip link set br-1aef6ff62773 down
ip link set br-76bbcf8f8d34 down
ip link set br-926f179fe064 down
ip addr del dev br-a8aeefb914d0
ip addr del dev br-bbfd634bae00
ip addr del dev br-1aef6ff62773
ip addr del dev br-76bbcf8f8d34
ip addr del dev br-926f179fe064
brctl delbr br-a8aeefb914d0
brctl delbr br-bbfd634bae00
brctl delbr br-1aef6ff62773
brctl delbr br-76bbcf8f8d34
brctl delbr br-926f179fe064
nmcli con delete br-a8aeefb914d0
nmcli con delete br-bbfd634bae00
nmcli con delete br-1aef6ff62773
nmcli con delete br-76bbcf8f8d34
nmcli con delete br-926f179fe064
Does this show that the kernel is notifying NetworkManager that the br-926f179fe064 needs created?
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/etc/NetworkManager/NetworkManager.conf
[logging]
level=TRACE
Trying to figure out how one of the bridges is recreated.
journalctl -u NetworkManager.service|grep 926f179fe06|tee output.txt
Code: Select all
Oct 15 19:53:23 laptop NetworkManager[672]: <trace> [1634324003.6171] platform-linux: event-notification: RTM_NEWLINK, flags 0, seq 0: 8: br-926f179fe064 <DOWN;broadcast,multicast> mtu 1500 arp 1 bridge* not-init addrgenmode eui64 addr 02:42:AB:61:13:7C brd FF:FF:FF:FF:FF:FF rx:0,0 tx:0,0; forward_delay 1500 hello_time 200 max_age 2000 ageing_time 30000 stp_state 0 priority 32768 vlan_protocol 33024 vlan_stats_enabled 0 group_fwd_mask 0 group_address 01:80:C2:00:00:00 mcast_snooping 1 mcast_router 1 mcast_query_use_ifaddr 0 mcast_querier 0 mcast_hash_max 4096 mcast_last_member_count 2 mcast_startup_query_count 2 mcast_last_member_interval 100 mcast_membership_interval 26000 mcast_querier_interval 25500 mcast_query_interval 12500 mcast_query_response_interval 1000 mcast_startup_query_interval 3124
Oct 15 19:53:23 laptop NetworkManager[672]: <debug> [1634324003.6171] platform: (br-926f179fe064) signal: link added: 8: br-926f179fe064 <DOWN;broadcast,multicast> mtu 1500 arp 1 bridge* not-init addrgenmode eui64 addr 02:42:AB:61:13:7C brd FF:FF:FF:FF:FF:FF driver bridge rx:0,0 tx:0,0
Oct 15 19:53:23 laptop NetworkManager[672]: <debug> [1634324003.6172] platform: (br-926f179fe064) signal: address 4 added: 172.21.0.1/16 brd 172.21.255.255 lft forever pref forever lifetime 8-0[4294967295,4294967295] dev 8 flags permanent src kernel
Oct 15 19:53:23 laptop NetworkManager[672]: <debug> [1634324003.6172] platform: (br-926f179fe064) signal: route 4 added: type local table 255 172.21.0.1/32 via 0.0.0.0 dev 8 metric 0 mss 0 rt-src rt-kernel scope host pref-src 172.21.0.1
Oct 15 19:53:23 laptop NetworkManager[672]: <debug> [1634324003.6230] device[1ff5b986827a7f4f] (br-926f179fe064): ifindex: set ifindex 8
Oct 15 19:53:23 laptop NetworkManager[672]: <debug> [1634324003.6231] device[1ff5b986827a7f4f] (br-926f179fe064): constructed (NMDeviceBridge)
Oct 15 19:53:23 laptop NetworkManager[672]: <debug> [1634324003.6231] device[1ff5b986827a7f4f] (br-926f179fe064): start setup of NMDeviceBridge, kernel ifindex 8
Oct 15 19:53:23 laptop NetworkManager[672]: <debug> [1634324003.6232] platform-linux: error reading net:/sys/class/net/br-926f179fe064/phys_port_id: error reading 4096 bytes from file descriptor: Operation not supported
Oct 15 19:53:23 laptop NetworkManager[672]: <debug> [1634324003.6232] platform-linux: sysctl: reading 'net:/sys/class/net/br-926f179fe064/dev_id': '0x0'
Oct 15 19:53:23 laptop NetworkManager[672]: <trace> [1634324003.6233] ethtool[8]: ETHTOOL_GDRVINFO, br-926f179fe064: success
Oct 15 19:53:23 laptop NetworkManager[672]: <debug> [1634324003.6233] platform-linux: error reading net:/sys/class/net/br-926f179fe064/device/sriov_numvfs: Failed to open file "device/sriov_numvfs" with openat: No such file or directory
Oct 15 19:53:23 laptop NetworkManager[672]: <debug> [1634324003.6233] device[1ff5b986827a7f4f] (br-926f179fe064): hw-addr: hardware address now 02:42:AB:61:13:7C
Oct 15 19:53:23 laptop NetworkManager[672]: <debug> [1634324003.6233] device[1ff5b986827a7f4f] (br-926f179fe064): hw-addr: update initial MAC address 02:42:AB:61:13:7C
Oct 15 19:53:23 laptop NetworkManager[672]: <debug> [1634324003.6234] device[1ff5b986827a7f4f] (br-926f179fe064): unmanaged: flags set to [platform-init,external-down=0x810/0x810/unmanaged/unrealized], set-unmanaged [external-down=0x800])
Oct 15 19:53:23 laptop NetworkManager[672]: <debug> [1634324003.6234] device[1ff5b986827a7f4f] (br-926f179fe064): unmanaged: flags set to [platform-init,external-down,!by-type=0x810/0x818/unmanaged/unrealized], set-managed [by-type=0x8])
Oct 15 19:53:23 laptop NetworkManager[672]: <debug> [1634324003.6234] device[1ff5b986827a7f4f] (br-926f179fe064): unmanaged: flags set to [platform-init,external-down,!sleeping,!by-type=0x810/0x819/unmanaged/unrealized], set-managed [sleeping=0x1])
Oct 15 19:53:23 laptop NetworkManager[672]: <info> [1634324003.6237] manager: (br-926f179fe064): new Bridge device (/org/freedesktop/NetworkManager/Devices/9)
thank you
Martin