SVC_VERSQUIET
#define version_keepquiet(xp) ((u_long)(xp)->xp_p3 & SVC_VERSQUIET)
tmp = ((u_long) xprt->xp_p3) | SVC_VERSQUIET;
tmp = ((u_long) xprt->xp_p3) & ~SVC_VERSQUIET;
return ((int) xprt->xp_p3) & SVC_VERSQUIET;