networking

2967 readers

13 users here now

Community for discussing enterprise networks and the ensuing chaos that comes after inheriting or building one.

founded 2 years ago

MODERATORS

[email protected]

Configure iPhone to see cell Internet and local non-Internet LAN at the same time? (self.networking)

submitted 23 hours ago* (last edited 23 hours ago) by CandleTiger to c/[email protected]

10 comments fedilink hide all child comments

I have an off-grid setup with a few devices on a local network that is not connected to the internet. I can tell my iPhone to use the non-internet wireless LAN to talk to those devices, OR I can tell it to use cellular data to talk to the Internet, but there’s no config on the iPhone side to let them be both live at the same time.

Is there any magic config on a wireless router e.g. certain DHCP settings or just disable DHCP, that will let the iPhone route to static 10.x IPs on the WLAN while the cellular internet is still active?

Any “advanced network settings” on the iPhone to manage multiple NICs?

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 3 points 17 hours ago (2 children)

Haven't tried this in a while (I've been off iPhone for 5years now), but iPhone used to allow this as follows:

If you join your home WiFi and have no default route set by dhcp, iPhone should tell you it has no internet and you can tell it to use the connection anyway.

The iPhone feature to "use 4g when WiFi is bad" should then solve for internet access and let you do both.

Just be aware you can't have split brain DNS, so internal LAN stuff will likely need to be accessed by ip address only, not DNS based.

[–] CandleTiger 1 points 17 hours ago

I will try it, thanks

load more comments (1 replies)