After updating to Ubuntu 20.04 LTS internet stopped working without VPN (I use Cloudflare WARP)
righthaze@desktop ~ ping google.com
PING google.com (216.58.215.110) 56(84) bytes of data.
ping: sendmsg: Operation not permitted
ping: sendmsg: Operation not permitted
ping: sendmsg: Operation not permitted
^C
--- google.com ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2033ms
✘ righthaze@desktop ~ ping 1.1.1.1
PING 1.1.1.1 (1.1.1.1) 56(84) bytes of data.
ping: sendmsg: Operation not permitted
ping: sendmsg: Operation not permitted
ping: sendmsg: Operation not permitted
ping: sendmsg: Operation not permitted
^C
--- 1.1.1.1 ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 3077ms
✘ righthaze@desktop ~ ping example.com
PING example.com (93.184.216.34) 56(84) bytes of data.
ping: sendmsg: Operation not permitted
ping: sendmsg: Operation not permitted
^C
--- example.com ping statistics ---
2 packets transmitted, 0 received, 100% packet loss, time 1010ms
ifconfig:
CloudflareWARP: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1280
inet 172.16.0.2 netmask 255.255.255.255 destination 172.16.0.2
inet6 fd01:5ca1:ab1e:8227:acc3:2dce:df63:6124 prefixlen 128 scopeid 0x0<global>
inet6 fe80::3ae2:48bc:b106:86a2 prefixlen 64 scopeid 0x20<link>
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500 (UNSPEC)
RX packets 92768 bytes 94782734 (94.7 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 62660 bytes 6638358 (6.6 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp9s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.100.95 netmask 255.255.255.0 broadcast 192.168.100.255
inet6 fe80::5:8e06:80:f76d prefixlen 64 scopeid 0x20<link>
ether 70:85:c2:67:16:cb txqueuelen 1000 (Ethernet)
RX packets 92436 bytes 101891366 (101.8 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 62165 bytes 11166130 (11.1 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Локальная петля (Loopback))
RX packets 3546 bytes 516958 (516.9 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3546 bytes 516958 (516.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
UFW Firewall is disabled:
$ sudo ufw status
Status: inactive
iptables: (without UFW rules, full list of rules - https://pastebin.com/Ruih9u2C)
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Output from ip route with active VPN :
righthaze@desktop ~ ip route
default via 192.168.100.1 dev enp9s0 proto dhcp metric 20100
169.254.0.0/16 dev CloudflareWARP scope link metric 1000
192.168.100.0/24 dev enp9s0 proto kernel scope link src 192.168.100.95 metric 100
With inactive VPN:
righthaze@desktop ~ ip route
default via 192.168.100.1 dev enp9s0 proto dhcp metric 20100
192.168.100.0/24 dev enp9s0 proto kernel scope link src 192.168.100.95 metric 100
if i connect to VPN with warp-cli connect all works fine
