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Check kernel version

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Kroese 2023-04-22 01:40:03 +02:00 committed by GitHub
parent ba9d814219
commit c97735f567
1 changed files with 4 additions and 2 deletions
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run/network.sh
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@ -112,8 +112,10 @@ configureNAT () {
iptables -t nat -A PREROUTING -i "${VM_NET_DEV}" -p tcp -j DNAT --to $VM_NET_IP
iptables -t nat -A PREROUTING -i "${VM_NET_DEV}" -p udp -j DNAT --to $VM_NET_IP
if (( KERNEL > 4 )); then
# Hack for guest VMs complaining about "bad udp checksums in 5 packets"
iptables -A POSTROUTING -t mangle -p udp --dport bootpc -j CHECKSUM --checksum-fill || true
fi
#Enable port forwarding flag
[[ $(< /proc/sys/net/ipv4/ip_forward) -eq 0 ]] && sysctl -w net.ipv4.ip_forward=1