Huza ikosa ry’ihuzagirama n’aderesi ya upstream. Ahantu ha IPv6 hamwe n’ikosa network-unreachable vyerekana ko inzira ya IPv6 yaguye n’iyo DNS yasubije inyishu yemewe. Ubutumwa “bwahagaritswe akanya gato” buza nyuma ntibushobora kwerekana DNS yonyine nk’impamvu.

Ku miterere iriho ikoresha resolver ya NGINX mu gihe c’akazi, politike y’IPv4 gusa ishobora gukoresha uburyo buvugwa mu gitabu c’Icongereza.

Ingingo zihuye