Can you ping your computer from your recovery shell? Can you try to ping the IP of some public service, like the Google DNS (8.8.8.8)?
/ # mkdir /mnt/rootfs / # mount /dev/mapper/sailfish-root /mnt/rootfs / # chroot /mnt/rootfs bash-3.2# mount /proc bash-3.2# mount /sys bash-3.2# mount /dev/pts bash-3.2# echo "nameserver 8.8.8.8" >> /etc/resolv.conf bash-3.2# route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.42.66.64 * 255.255.255.248 U 0 0 0 rndis0 192.168.2.0 * 255.255.255.0 U 0 0 0 rndis0 bash-3.2# route add default gw 10.42.66.67 bash-3.2# route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default 10.42.66.67 0.0.0.0 UG 0 0 0 rndis0 10.42.66.64 * 255.255.255.248 U 0 0 0 rndis0 192.168.2.0 * 255.255.255.0 U 0 0 0 rndis0 bash-3.2# su [root@(none) /]# ip -4 addr 3: rndis0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 inet 10.42.66.66/29 brd 10.42.66.255 scope global rndis0 valid_lft forever preferred_lft forever inet 192.168.2.15/24 brd 192.168.2.255 scope global rndis0:0 valid_lft forever preferred_lft forever [root@(none) /]# ip route default via 10.42.66.67 dev rndis0 10.42.66.64/29 dev rndis0 proto kernel scope link src 10.42.66.66 192.168.2.0/24 dev rndis0 proto kernel scope link src 192.168.2.15 [root@(none) /]# tracepath -n 8.8.8.8 1: send failed Resume: pmtu 65535 [root@(none) /]# ping -c 5 google.com ping: unknown host google.com [root@(none) /]# exit exit bash-3.2# ifconfig rndis0 Link encap:Ethernet HWaddr B6:23:76:8C:DC:63 inet addr:10.42.66.66 Bcast:10.42.66.255 Mask:255.255.255.248 inet6 addr: fe80::b423:76ff:fe8c:dc63/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1188 errors:0 dropped:0 overruns:0 frame:0 TX packets:505 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:91017 (88.8 KiB) TX bytes:60383 (58.9 KiB) rndis0:0 Link encap:Ethernet HWaddr B6:23:76:8C:DC:63 inet addr:192.168.2.15 Bcast:192.168.2.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
sudo sysctl net.ipv4.ip_forward=1 sudo iptables -t nat -A POSTROUTING -o wlp2s0 -j MASQUERADE