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* dirmngr/dns.c (FD_SETSIZE): Bump up to 1024. (dns_poll): Return an error instead of hitting an assertion failure. -- For unknown reasons socket() return fd with values 244, 252, 268. The latter is above the FD_SETSIZE of 256. It seems that select has been build with a highler FD_SETSIZE limit. Bump up to a reasonable large value. A better solution would be to grab some code from npth_eselect to replace select. We could also use npth_eselect direclty in dns-stuff.c instead of using dns_res_poll. Signed-off-by: Werner Koch <wk@gnupg.org>