LM_SLC
IAC, SB, TELOPT_LINEMODE, LM_SLC, 0, SLC_VARIABLE, 0, IAC, SE
IAC, SB, TELOPT_LINEMODE, LM_SLC, 0, SLC_DEFAULT, 0, IAC, SE
*slc_replyp++ = LM_SLC;
case LM_SLC:
case LM_SLC:
IAC, SB, TELOPT_LINEMODE, LM_SLC);
if (request == LM_SLC) { /* SLC is not preceeded by WILL or WONT */
ADD(LM_SLC);
case LM_SLC: