[ -n "$ip6prefix" ] && proto_export "USERPREFIX=$ip6prefix"
[ -n "$iface_dslite" ] && proto_export "IFACE_DSLITE=$iface_dslite"
- [ "$sourcerouting" = "1" ] && proto_export "SOURCE_ROUTING=1"
+ [ "$sourcerouting" != "0" ] && proto_export "SOURCE_ROUTING=1"
proto_export "INTERFACE=$config"
proto_run_command "$config" odhcp6c \