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- #!/bin/sh
- # This allows NFS booting to work while also being able to configure
- # the network interface via DHCP when not NFS booting. Otherwise, a
- # NFS booted system will likely hang during DHCP configuration.
- # Attempting to configure the network interface used for NFS will
- # initially bring that network down. Since the root filesystem is
- # accessed over this network, the system hangs.
- # This script is run by ifup and will attempt to detect if a NFS root
- # mount uses the interface to be configured (IFACE), and if so does
- # not configure it. This should allow the same build to be disk/flash
- # booted or NFS booted.
- nfsip=`sed -n '/^[^ ]*:.* \/ nfs.*[ ,]addr=\([0-9.]\+\).*/s//\1/p' /proc/mounts`
- if [ -n "$nfsip" ] && ip route get to "$nfsip" | grep -q "dev $IFACE"; then
- echo Skipping $IFACE, used for NFS from $nfsip
- exit 1
- fi
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