-local has_3g = fs.access("/usr/bin/gcom")
-local has_pptp = fs.access("/usr/sbin/pptp")
-local has_pppd = fs.access("/usr/sbin/pppd")
-local has_pppoe = fs.glob("/usr/lib/pppd/*/rp-pppoe.so")()
-local has_pppoa = fs.glob("/usr/lib/pppd/*/pppoatm.so")()
-local has_ipv6 = fs.access("/proc/net/ipv6_route")
+local has_3g = fs.access("/usr/bin/gcom")
+local has_pptp = fs.access("/usr/sbin/pptp")
+local has_pppd = fs.access("/usr/sbin/pppd")
+local has_pppoe = fs.glob("/usr/lib/pppd/*/rp-pppoe.so")()
+local has_pppoa = fs.glob("/usr/lib/pppd/*/pppoatm.so")()
+local has_ipv6 = fs.access("/proc/net/ipv6_route")
+local has_6in4 = fs.access("/lib/network/6in4.sh")