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feat: Detect default interface

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* feat: Detect default interface
This commit is contained in:
Kroese
2023-12-28 20:25:04 +01:00
committed by GitHub
parent 1208c53ebb
commit 527bded1b2
4 changed files with 16 additions and 8 deletions
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11
src/network.sh
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@@ -6,8 +6,8 @@ set -Eeuo pipefail
: ${DHCP:='N'}
: ${MAC:='02:11:32:AA:BB:CC'}
: ${VM_NET_DEV:=''}
: ${VM_NET_TAP:='dsm'}
: ${VM_NET_DEV:='eth0'}
: ${VM_NET_MAC:="$MAC"}
: ${VM_NET_HOST:='VirtualDSM'}
@@ -204,14 +204,21 @@ fi
update-alternatives --set iptables /usr/sbin/iptables-legacy > /dev/null
update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy > /dev/null
if [ -z "$VM_NET_DEV" ]; then
# Automaticly detect the default network interface
VM_NET_DEV=$(awk '$2 == 00000000 { print $1 }' /proc/net/route)
[ -z "$VM_NET_DEV" ] && VM_NET_DEV="eth0"
fi
if [ ! -d "/sys/class/net/$VM_NET_DEV" ]; then
error "Network interface $VM_NET_DEV does not exist inside the container!"
error "Network interface '$VM_NET_DEV' does not exist inside the container!"
error "$ADD_ERR -e \"VM_NET_DEV=NAME\" to specify another interface name." && exit 27
fi
VM_NET_MAC="${VM_NET_MAC//-/:}"
GATEWAY=$(ip r | grep default | awk '{print $3}')
IP=$(ip address show dev "$VM_NET_DEV" | grep inet | awk '/inet / { print $2 }' | cut -f1 -d/)
echo "$IP" > /run/qemu.ip
if [[ "$DEBUG" == [Yy1]* ]]; then
info "Container IP is $IP with gateway $GATEWAY" && echo