Is there a way in linux to increase the MTU size of a Broadcast interface on linux to be able to send bigger UDP packets? I am broadcasting UDP packets on a `Bcast:192.168.1.255` of a `wlan0` interface on linux. Its working well and I am receiving an UDP client written on another machine. I learnt that I cannot send a UDP packet bigger than the MTU size stated on that particular interface. The broadcast interface's MTU size states _1500_. So, tests indicate like I cannot send a UDP bigger than 1500 bytes? I can send smaller UDP packets which I confirmed works. **Question** Is there a way in linux to increase the MTU size of a Bcast interface on linux? What are the drawbacks if it is possible?

The `ip link` command is a key; can it change MTU for a wlan connection?

Either way : `ip link set wlan0 mtu 4000`

But do the AP supports sk jumbo frames or can it be configured to do that?

Linux uses MTU discovery when sending UDP so outbound and outsize UDP packets can be rejected by the system (EMSGSIZE error.) MTU Path discovery can be disabled but still the network equipment will drop outsize datagrams (and it won't fragment them.)

UDP = User Datagram Protocol (so as a default it should reject oversize packets , one datagram = one (ethernet) frame)