On Wed, Mar 06, 2019 at 03:52:31PM +0700, Eugene Grosbein wrote: > 06.03.2019 5:46, Goran Mekić wrote: > As shown, nc generates UDP datagramm without (optional) checksum. It's because of offloading. When I check it on router, checksum is fine.
> > So what am I doing wrong and how can I send UDP broadcast from either > > script of C code? Thank you! > > You should try ncat from security/nmap instead of nc. Tried it with this: printf "/info\0\0\0" | ncat -4u 255.255.255.255 10024 Absolutely same result. If I use mixer IP I get the response, so I know what I'm sending is OK: printf "/info\0\0\0" | ncat -4u 192.168.5.80 10024 It works with ncat and nc. Regards, meka
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