Man pages matching name res_send in section 3:

res_send.3.de	debian 10 / manpages-de-dev
res_send.3.en	debian 10 / manpages-dev
res_send.3.es	debian 10 / manpages-es
res_send.3.ja	debian 10 / manpages-ja-dev
res_send.3.de	debian 11 / manpages-de-dev
res_send.3.en	debian 11 / manpages-dev
res_send.3.ja	debian 11 / manpages-ja-dev
res_send.3.de	debian 12 / manpages-de-dev
res_send.3.en	debian 12 / manpages-dev
res_send.3.fr	debian 12 / manpages-fr-dev
res_send.3.ja	debian 12 / manpages-ja-dev