I have gretap tunnel, but the vm: [error] Error: [0] Cannot read from socket

I have gretap tunnel, but the vm: [error] Error: [0] Cannot read from socket, gretap error (0 Replies, Read 9087 times)

nszero	# February 5, 2025, 7:36 pm
Group: Member Post Group: Newbie Posts: 5 Status:	0 I have gretap tunnel, but the vm [error] Error: [0] Cannot read from socket Hi, can I ask for some help? I have gretap tunnel, but sometimes ping throws an error and slows down the internet.. What could be the problem? Error: Latency: FAILED [error] Cannot read: or [error] Trying to get interface information on non-initialized socket. Packet Loss: 4.7% could you help me thank you very much my vps server where the ip addresses are gretap: ip link add gre4 type gretap local 134.55.55.55 remote 244.55.55.99 ttl 255 ip link set gre4 up ip addr add 172.40.0.1/30 dev gre4 # mtu, mss fix iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu # ip routes ip ro a 182.54.67.75/32 dev gre4 ip ro a 182.54.67.76/32 dev gre4 ip ro a 182.54.67.77/32 dev gre4 #---------- # arp tables arp -s 182.54.67.75 $(cat /sys/class/net/eth0/address) -i eth0 pub arp -s 182.54.67.76 $(cat /sys/class/net/eth0/address) -i eth0 pub arp -s 182.54.67.77 $(cat /sys/class/net/eth0/address) -i eth0 pub on my own server gretap: ip link add gre4 type gretap local 244.55.55.99 remote 134.55.55.55 ttl 255 ip link set gre4 up # create br brctl addbr viifbr0 brctl addif viifbr0 gre4 ip link set viifbr0 up # add ip to br ip addr add 172.40.0.2/30 dev viifbr0 # mtu, mss fix iptables -t mangle -A PREROUTING -j CONNMARK --restore-mark iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu echo 1 > /proc/sys/net/ipv4/ip_forward MTU: enp8s0: 1500 gre4: 1462 viifbr0: 1462 VM servers: 1450 dmesg: [ 66.934227] systemd-journald[582]: /var/log/journal/7029f2af40fb48f49e775ad9f6e1cacb/user-1000.journal: Journal file uses a different sequence number ID, rotating. [ 87.340554] gre: GRE over IPv4 demultiplexor driver [ 87.368190] ip_gre: GRE over IPv4 tunneling driver [ 87.485386] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this. [ 87.488041] viifbr0: port 1(gre4) entered blocking state [ 87.488048] viifbr0: port 1(gre4) entered disabled state [ 87.488058] gre4: entered allmulticast mode [ 87.488120] gre4: entered promiscuous mode [ 87.490665] viifbr0: port 1(gre4) entered blocking state [ 87.490674] viifbr0: port 1(gre4) entered forwarding state Netplan: network: version: 2 renderer: networkd ethernets: enp8s0: dhcp4: no addresses: - 244.55.55.99/24 routes: - to: default via: 244.55.55.1 nameservers: addresses: [8.8.8.8,8.8.4.4] Resolv: nameserver 8.8.8.8 nameserver 8.8.4.4
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