SU tends to dislike computers that aren't “real” computers (whatever that means). PDAs such as smartphones are definitely off-topic, but home networking equipment is usually given a pass.

If your question is related to a unix-based firmware such as *WRT, you can ask on Unix & Linux, where all Linux-based systems are on-topic regardless of the hardware you're running on. (Note: this is about scope only. I do not guarantee an answer, I think SU's WRT community is bigger than U&L's.) U&L isn't a place for questions about home networking in general: if your router isn't Linux-based or your question isn't about the router itself but about general networking matters, U&L isn't the right place for it.

SU tends to dislike computers that aren't “real” computers (whatever that means). PDAs such as smartphones are definitely off-topic, but home networking equipment is usually given a pass.

If your question is related to a unix-based firmware such as *WRT, you can ask on Unix & Linux, where all Linux-based systems are on-topic regardless of the hardware you're running on. (Note: this is about scope only. I do not guarantee an answer, I think SU's WRT community is bigger than U&L's.) U&L isn't a place for questions about home networking in general: if your router isn't Linux-based or your question isn't about the router itself but about general networking matters, U&L isn't the right place for it.