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After migrating my Ubuntu server 18.04 to a new VM , It seems it cannot resolve hosts anymore because i cannot curl or wget any website , but I can ping without any problem .

Here is my UFW log :

Mar 10 15:21:32 user kernel: [ 59.336422] [UFW BLOCK] IN=ens33 OUT= MAC=00:0c:29:4a:86:e0:00:50:56:e9:2e:e5:08:00 SRC=91.189.91.42 DST=192.168.142.131 LEN=64279 TOS=0x00 PREC=0x00 TTL=128 ID=19369 PROTO=TCP SPT=443 DPT=57168 WINDOW=64240 RES=0x00 ACK PSH URGP=0 Mar 10 15:21:34 user kernel: [ 61.337738] [UFW BLOCK] IN=ens33 OUT= MAC=00:0c:29:4a:86:e0:00:50:56:e9:2e:e5:08:00 SRC=91.189.91.42 DST=192.168.142.131 LEN=64279 TOS=0x00 PREC=0x00 TTL=128 ID=19413 PROTO=TCP SPT=443 DPT=57168 WINDOW=64240 RES=0x00 ACK PSH URGP=0 Mar 10 15:21:38 user kernel: [ 65.339298] [UFW BLOCK] IN=ens33 OUT= MAC=00:0c:29:4a:86:e0:00:50:56:e9:2e:e5:08:00 SRC=91.189.91.42 DST=192.168.142.131 LEN=64279 TOS=0x00 PREC=0x00 TTL=128 ID=19457 PROTO=TCP SPT=443 DPT=57168 WINDOW=64240 RES=0x00 ACK PSH URGP=0 Mar 10 15:21:46 user kernel: [ 73.342867] [UFW BLOCK] IN=ens33 OUT= MAC=00:0c:29:4a:86:e0:00:50:56:e9:2e:e5:08:00 SRC=91.189.91.42 DST=192.168.142.131 LEN=64279 TOS=0x00 PREC=0x00 TTL=128 ID=19501 PROTO=TCP SPT=443 DPT=57168 WINDOW=64240 RES=0x00 ACK PSH URGP=0 Mar 11 20:54:44 user kernel: [26082.087157] [UFW BLOCK] IN=ens33 OUT= MAC=00:50:56:a4:a7:5e:00:00:00:00:00:00:08:00 SRC=0.0.0.0 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=0 PROTO=2 Mar 11 20:54:51 user kernel: [26089.085179] [UFW BLOCK] IN=ens33 OUT= MAC=00:50:56:a4:a7:5e:00:00:00:00:00:00:08:00 SRC=0.0.0.0 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=0 PROTO=2 Mar 11 21:24:57 user kernel: [27895.087178] [UFW BLOCK] IN=ens33 OUT= MAC=00:50:56:a4:a7:5e:00:00:00:00:00:00:08:00 SRC=0.0.0.0 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=0 PROTO=2 Mar 11 21:24:59 user kernel: [27897.087167] [UFW BLOCK] IN=ens33 OUT= MAC=00:50:56:a4:a7:5e:00:00:00:00:00:00:08:00 SRC=0.0.0.0 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=0 PROTO=2 Mar 11 21:25:06 user kernel: [27904.087226] [UFW BLOCK] IN=ens33 OUT= MAC=00:50:56:a4:a7:5e:00:00:00:00:00:00:08:00 SRC=0.0.0.0 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=0 PROTO=2

Here is my ifconfig -a result :

br-9940447c6eab: flags=4163 mtu 1500 inet x.x.x.x netmask 255.255.0.0 broadcast x.x.x.x inet6 fe80::42:27ff:fe86:72ea prefixlen 64 scopeid 0x20 ether 02:42:27:86:72:ea txqueuelen 0 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 39 bytes 2906 (2.9 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

docker0: flags=4099 mtu 1500 inet x.x.x.x netmask 255.255.0.0 broadcast x.x.x.x ether 02:42:12:7a:2d:cf txqueuelen 0 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

ens33: flags=4163 mtu 1500 inet x.x.x.x netmask 255.255.255.0 broadcast x.x.x.x inet6 fe80::250:56ff:fea4:a75e prefixlen 64 scopeid 0x20 ether 00:50:56:a4:a7:5e txqueuelen 1000 (Ethernet) RX packets 15658 bytes 1490820 (1.4 MB) RX errors 0 dropped 536 overruns 0 frame 0 TX packets 6142 bytes 1093750 (1.0 MB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

flannel.1: flags=4163 mtu 1450 inet x.x.x.x netmask 255.255.255.255 broadcast 0.0.0.0 inet6 fe80::88fb:b8ff:fe88:ad7d prefixlen 64 scopeid 0x20 ether 8a:fb:b8:88:ad:7d txqueuelen 0 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 36 overruns 0 carrier 0 collisions 0

lo: flags=73 mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10 loop txqueuelen 1000 (Local Loopback) RX packets 9850222 bytes 1611232612 (1.6 GB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 9850222 bytes 1611232612 (1.6 GB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

veth07da3a3: flags=4163 mtu 1500 inet6 fe80::74aa:d7ff:feaa:8e7d prefixlen 64 scopeid 0x20 ether 76:aa:d7:aa:8e:7d txqueuelen 0 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 64 bytes 4576 (4.5 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

veth29c9418: flags=4163 mtu 1500 inet6 fe80::a43c:93ff:fe7f:292f prefixlen 64 scopeid 0x20 ether a6:3c:93:7f:29:2f txqueuelen 0 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 18 bytes 1356 (1.3 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

veth9e96a0e: flags=4163 mtu 1500 inet6 fe80::98f1:3cff:fe6e:d619 prefixlen 64 scopeid 0x20 ether 9a:f1:3c:6e:d6:19 txqueuelen 0 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 69 bytes 5006 (5.0 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

Here is my resolv.conf :

nameserver 178.22.122.100
nameserver 185.51.200.2

Is there any problem with my OS or the problem comes from ISP?

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