dhcp_packaet.c: -Werror=implicit-fallthrough=

https://github.com/sargon/ddhcpd/blob/9fd32f274489fe6d3dd789e1afd5aa8c59f83a7f/dhcp_packet.c#L207

echo '#define REVISION "3cbb8be3435996fdb33ad7b63e3ad10481e5603a"' > version.h
gcc -Wall -Wextra -pedantic -Werror -flto -fno-strict-aliasing -std=gnu11 -D_GNU_SOURCE -MD -MP -DNDEBUG   -c -o dhcp_packet.o dhcp_packet.c
dhcp_packet.c: In function ‘ntoh_dhcp_packet’:
dhcp_packet.c:207:12: error: this statement may fall through [-Werror=implicit-fallthrough=]
       exit = 1;
       ~~~~~^~~
dhcp_packet.c:209:5: note: here
     case DHCP_CODE_PAD:
     ^~~~
cc1: all warnings being treated as errors
make: *** [<builtin>: dhcp_packet.o] Error 1

sargon / ddhcpd

dhcp_packaet.c: -Werror=implicit-fallthrough= #6