[Nexus 5 Q&A, Help & Troubleshooting] agroszer:
Tried both the APN and sqlite hacks, still no luck with tethering.

"Android betrays tethering data" by Daniel Pocock

brought me to the idea to fiddle with the terminal, but settings are different...

any ideas what to do?

tethering disabled:

u0_a155@hammerhead:/ $ ip route
default via 192.0.0.4 dev clat4 scope link
38.7.248.176 dev rmnet0 scope link
192.0.0.4 dev clat4 scope link
u0_a155@hammerhead:/ $ ip rule show
0: from all lookup local
32766: from all lookup main
32767: from all lookup default
u0_a155@hammerhead:/ $ netcfg
clat4 UP 192.0.0.4/32 0x000010d1 00:00:00:00:00:00
wlan0 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
lo UP 127.0.0.1/8 0x00000049 00:00:00:00:00:00
p2p0 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
clat UP 0.0.0.0/0 0x000010d1 00:00:00:00:00:00
sit0 DOWN 0.0.0.0/0 0x00000080 00:00:00:00:00:00
rmnet4 DOWN 0.0.0.0/0 0x00000000 00:00:00:00:00:00
rmnet2 DOWN 0.0.0.0/0 0x00000000 00:00:00:00:00:00
rmnet3 DOWN 0.0.0.0/0 0x00000000 00:00:00:00:00:00
rmnet7 DOWN 0.0.0.0/0 0x00000000 00:00:00:00:00:00
rmnet5 DOWN 0.0.0.0/0 0x00000000 00:00:00:00:00:00
rmnet6 DOWN 0.0.0.0/0 0x00000000 00:00:00:00:00:00
rmnet1 DOWN 0.0.0.0/0 0x00000000 00:00:00:00:00:00
rmnet0 UP 0.0.0.0/0 0x00000041 00:00:00:00:00:00
rev_rmnet1 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet0 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet4 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet2 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet3 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet7 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet5 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet6 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet8 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx

tethering enabled:

127|u0_a155@hammerhead:/ $ ip route
default via 192.0.0.4 dev clat4 scope link
10.168.191.116 via 100.250.253.173 dev rmnet1
10.168.191.116 via 100.250.253.173 dev rmnet1 src 100.250.253.174
10.177.0.34 via 100.250.253.173 dev rmnet1
10.177.0.34 via 100.250.253.173 dev rmnet1 src 100.250.253.174
38.7.248.176 dev rmnet0 scope link
100.250.253.172/30 dev rmnet1 proto kernel scope link src 100.250.253.174 100.250.253.173 dev rmnet1 scope link
192.0.0.4 dev clat4 scope link
192.168.43.0/24 dev wlan0 proto kernel scope link src 192.168.43.1
u0_a155@hammerhead:/ $ ip rule show
0: from all lookup local
32765: from 192.168.43.0/24 lookup 60
32766: from all lookup main
32767: from all lookup default
1|u0_a155@hammerhead:/ $ ip route show table 60
default via 100.250.253.173 dev rmnet1
100.250.253.173 dev rmnet1
192.168.43.0/24 dev wlan0 scope link
u0_a155@hammerhead:/ $ netcfg
clat4 UP 192.0.0.4/32 0x000010d1 00:00:00:00:00:00
wlan0 UP 192.168.43.1/24 0x00001043 xx:xx:xx:xx:xx:xx
lo UP 127.0.0.1/8 0x00000049 00:00:00:00:00:00
p2p0 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
clat UP 0.0.0.0/0 0x000010d1 00:00:00:00:00:00
sit0 DOWN 0.0.0.0/0 0x00000080 00:00:00:00:00:00
rmnet4 DOWN 0.0.0.0/0 0x00000000 00:00:00:00:00:00
rmnet2 DOWN 0.0.0.0/0 0x00000000 00:00:00:00:00:00
rmnet3 DOWN 0.0.0.0/0 0x00000000 00:00:00:00:00:00
rmnet7 DOWN 0.0.0.0/0 0x00000000 00:00:00:00:00:00
rmnet5 DOWN 0.0.0.0/0 0x00000000 00:00:00:00:00:00
rmnet6 DOWN 0.0.0.0/0 0x00000000 00:00:00:00:00:00
rmnet1 UP 100.250.253.174/30 0x00000041 00:00:00:00:00:00
rmnet0 UP 0.0.0.0/0 0x00000041 00:00:00:00:00:00
rev_rmnet1 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet0 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet4 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet2 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet3 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet7 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet5 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet6 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
rev_rmnet8 DOWN 0.0.0.0/0 0x00001002 xx:xx:xx:xx:xx:xx
u0_a155@hammerhead:/ $